diff --git a/cores/arduino/USBAPI.h b/cores/arduino/USBAPI.h
index f22ab6a..358444e 100644
--- a/cores/arduino/USBAPI.h
+++ b/cores/arduino/USBAPI.h
@@ -193,6 +193,7 @@ bool	CDC_Setup(USBSetup& setup);
 
 int USB_SendControl(uint8_t flags, const void* d, int len);
 int USB_RecvControl(void* d, int len);
+int USB_RecvControlLong(void* d, int len);
 
 uint8_t	USB_Available(uint8_t ep);
 uint8_t USB_SendSpace(uint8_t ep);